Differential



Oct. 23 1923.

C. ANDRADE, JR

- DIFFERENTIAL Filed Aug. 25 1922 Patented Oct. 23, 1923.

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CIPRIANO ANDRADE, an, or new YORK, 1v.' Y.

DIFFERENTIAL. I

Application filed August 25, 1922 Serial No. 584,846.

T all whom it may concern 1 Be it 'known that I, CIPRIANQ Animation,

.lnnaici tiz en oif the United States, residing at New Ioric, in thecounty of New York and State of'New York, have 'in'vented a newanduseful Differential, of which the following is. a specification. f i

My invention relates to roller locking differentials; and the objectofmy invention is toprovide a differential more-simple in constructionthan those now in use.

I attain this object by the mechanism ilwhich- V Fig. 1 is alongitudinal section elevation of the entire device on the line B H ofFig. 2; Fig. 2 is an end view of my device with the flange B removed.Fig. "3' is a longitudinal section elevation of another form of rollerlocking member D, with recess D and a circumferential groove D and aflange D on neck D Fig. 4 is an end view ofFig. 3. A similar groove andflange may be put on the otherroller locking member with the projectionDFig.1 5 is another form offlangeB on the driving member, withslotsB andB to admit neck D ,.and projections B to enter groove D instead ofslot'B slot B indicated in dotted lines can be used to admit neck-D f toslot'B Fla'ngeD is shown in dotted lines in Fig. Instead of the solidflanges B and B shown in Fig. 1 and Fig.2, an alternative form of flangeB (Fig. 5) 'may be used, with circumferential slots B and radial slots-Blustrated in the accompanying drawings,in

or B said slots being "adapted to contain neck D of roller locking-member D, the flange B and projection 13* being'of such thickness as toallow a close sliding fit between flange D and the body of rollerlocking member D7 this combination of parts performing the quadruplefunction of (1) preventing the roller locking member D from-changingthedirection of its axis, (2) permitting the roller locking member D torotate freely on its ownaxis, (8) permitting the roller locking'member Dto move for a limited distance circumferentially with reference to theflange B 'orB ll-preventing the roller lockingTniember Dfrom changingits position longitudinally.

lates to the rollers D, D is familiar in the Similar letters refer tosimilar --parts throughout theseveral views;

A. is the central portion of theidriving t member B A B with flanges Band B fastened. to it bybolts Eand nuts F." C and C are driven members,with keyways C and G and openings C and C to hold the driven shafts. D,is a cylindricalilocking memberwith cylindricalopening D at one I end.-D is a cylindrical locking'member," with cylindrical projection D ofsmaller diameter than opening D and of less lengththan roller D. A is atransverse opening in" the central portion Aof driving member" B A BThe, radial distance between the pie riphery of driven members C andC.andA is greater than the diameter of locking members D and D The radialdistance between the peripheryof driven members C e and C andA or Ais-less than the diameter oflockingmembers'D and D It will beobservedthat flanges B and B hold the driven .members 0 and C fromlongitudinal motion, and yet leave driven members C and C free torotate. i It will also be observed that flanges B and B holdlockingmembers D and D from longitudinal motion, and yet leave locking membersD and D free to rotate, at the same time preventing-locking members Dand D from changingthe direction of their 7 axes of rotation, said: axesbeing atalli times parallel with the axes ofrotation of. driv' ingmember'B A B and driven members C. andC p i, ii"

It will be observed also, that the diifen ence between the diameters ofrecess D and projection D permits lockingmembers D and D while holdingtheir axes parallel, to move relatively to each other circumferentiallyalon the periphery of driven membersOandb The operation-of my device sofar as re.-

prior art, 'and:my device permits diflfereutial motion of the two drivenmembers either forward or reverse, "and the power is always applied tothe lower wheel.

Thep'ec'uliar feature of my device resides in the novel means of thelug- D in combination with the recess Di to provide the necessarylimited relative motion be tween rollers D and D also in the alternativearrangement of flange D with slot B to effect the four functionsenumerated in this specification.

I claim::- j

1. In adiiferential; a driving member with a recess in its surface, saidrecess having each of its sides lowerv than its central portion; a firstand a second driven'membero with surfaces containing no recesses, afirst locking roller between the said surface of the first driven member-and one end of'the recess in the driving member, and adapted to lock orunl'eck' its said adjacent members either in a forward" or reversedirection; a second locking roller between' the said surface of thesecond- I driven member and the other-end ofthe recess in the drivingmem ber, and adapted to locko'r'unlock its said adjacent mem bers eitherin a forward or reverse diriectiongandmeans integralwith said first and'second locking rollers, whereby said 'first locking roller may-.move toa limited extent in=-relation to said locking roller circumferentiallywith reference to Saiddrivenmembersz V I 2. In 'a difierentia1;-a:driving member with .a recess in itssurface, said recess havingfeachof'its sidesilower than its central portion a first: and second -drivenmember with surfacescontaining no recesses, a first lockingrollerbetween the said surface of the:first driven'memberand one'end ofthe recess inthe driving member, and adapted to lock or unlockitssaid-adjacent members T either in a forward or reverse directionyasecond lock ing'rollenbetween the said surfacev of the second drivenmember and the otherkend ofthe recess in'the driving'member,'and adaptedto=lock or unlockits said adj ace nt memb'ers' either in a forward orreverse direction; awlugon the end of the firstzlocking roller, saidlugentering a recess in the .end of the second locking roller, saidrecess being,substantially; larger in diameteri than saiddug.

3. rIni'a, differential, a driving member with a recess in its innersurface. said recess .sjaid adj agent membersgeithen in; a forwardmembers bein-grinside of the inner surface of said driving member; afirst locking roller between the said outer- Surfaceof-thefirst drivenmember and one'end of-"the-recess' ln the driving-membenand adapted-tolock or unlock its said adjacent members either in a forward or reversedirection; a second looking rollervbetween the said outer-surface-of thesecond driven member andthe other end of the recess in the drivingmember, and adapted to dock or unloclr'its" saidadjacent members eitherin-Ja forward or reverse; direction; and a lug on the end of the firstlocking roller, said lug entering a recess 1 in the end of thesecond-"locking roller, said recess being substantially larger indiameter than said lug,

5, In a differential; a drivingwmembe'r, a first driven member;- asecond; driven, inenr her; a first cylindricallocking member havingarecess'at one end, andada'pted to-lock or Lunlock the drivingsmeniber-andsthe first driven member either -in'--forward or reversemotion; a second Cylindricallocking member adapted to. lock or:n'nlock the driving member andt-he second driven member either inforward or reverse--motion, said second cylindrical locki-ng'memberhaving/aprojection at one end, said projectionabeing adaptedto'en-terandbe. confined by there: cess in-the first locking member,,the*trans} verse dimension of said projection being substantially; smallerI than the; transverse dimension of said recess, whei'iebysaichtwolocking members are capable-of a limited circumferential --n otionflinrelation to each r-A; a 1, I i a v 6; In a diiferentialgt wo.cylindrical"locking rollers located. endwisewith reference to each other; aprojection; at ,-the;end of oneof said rollers; and a recess at the endof ;the

other roller, said recess' being ofa larger sectional I area than saidprojection," and adapted to' contain said projection, whereby one rolleris capable of'a limited transverse motion in relation to the other Iroller.

, 7; Inadifierential; a driving member; ;a first driven member ,aasecond driven member; a first roller locking--member withga recess atone end and-a groove-and a flange at theotherend; a second rollerlocking member, with a projection at one end, and a groove and a, flangeat the other end. said projection being of smaller area than said recessand adapted to enter said recess, wheredriving member and containing acircumferential groove, whereby said first containing flange enters thegroove in said first roller locking member and holds the same at a 10constant axial parallelism; and a second containing flange rigidlyafiixed to said driving member, and containing a circumferential groove,Wherebysaids'econd containing i flange enters the groove in said secondrollerlocking member, and holds thesame ata 15 constant axialparallelism.

, CIPRIANO ANDRADE, JR.

Witnesses:

' GUY W. HonoEs,

SAMUEL S. Goonm.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,471,642, grantedOctober 23, 1923, upon the application of Cipriano Andrade, jr., of NewYork, N. Y., for an improvement in Differentials, errors appear in theprinted specification requiring correction as follows: Page 1, line 99,for the word lower read slower; page 2, line 25, claim 1, after the wordsaid insert the word second, same page, line 31, claim 2, after the worcand insert the article a, and lines 32 and 48, claims 2 and 3, and page3, line 4, claim 7 strike out the comma and insert a semicolon; and thatthe said Letters Patent should be read with these corrections thereinthat the same may conform to the record of the case in the PatentOflice.

Signed and sealed this 4th day of December, A. D., 1923.

[SEAL] KARL FENNING, 2 Acting aomwnissioner of Patents.

